阅读说明：本技术 一种带钢控制板型操作方法 (Strip steel control plate type operation method ) 是由 陈帅 于 2020-10-30 设计创作，主要内容包括：本发明公开了一种带钢控制板型操作方法,涉及带钢制作技术领域,带钢控制板型操作步骤如下：步骤一：带钢退火；将带钢放进设备内部进行退火热处理,且放置在机架的导轨上,步骤二：中间坯板控制；通过观察热卷箱入口侧导板监视器、热卷箱卷形、优化剪切曲线图、精轧F1-F2轧制力偏差变化、平直度仪楔形变化情况,从而操作控制板调整粗轧参数,对中间坯板进行压轧,步骤三：负荷分配；操作控制板调节4、5、6机架负荷尽量小一点。本发明本发明通过观察热卷箱入口侧导板监视器、热卷箱卷形、优化剪切曲线图、精轧F1-F2轧制力偏差变化、平直度仪楔形变化情况来判断,及时对粗轧做好调整,保证轧制薄规格时板形良好,继而提高生产带钢的品质。(The invention discloses a strip steel control plate type operation method, which relates to the technical field of strip steel manufacturing, and comprises the following steps: the method comprises the following steps: annealing the strip steel; putting the strip steel into the equipment for annealing heat treatment, and placing the strip steel on a guide rail of the rack, and the second step: controlling the intermediate blank plate; through observing the monitor of the side guide plate at the inlet side of the hot coil box, the coil shape of the hot coil box, the optimized shearing curve chart, the deviation change of the rolling force of finish rolling F1-F2 and the wedge-shaped change condition of a flatness meter, the rough rolling parameters are adjusted by the operation control board, and the intermediate blank plate is rolled, and the third step is that: distributing the load; the operating panel adjusts the frame loads 4, 5, 6 as little as possible. The invention judges by observing the guide plate monitor at the inlet side of the hot coil box, the coil shape of the hot coil box, the optimized shearing curve chart, the deviation change of the finish rolling force of F1-F2 and the wedge change condition of the flatness meter, adjusts the rough rolling in time, ensures that the plate shape is good when the thin gauge is rolled, and then improves the quality of the produced strip steel.)

1. A strip steel control plate type operation method is characterized in that: the operation steps of the strip steel control plate type are as follows:

the method comprises the following steps: annealing the strip steel;

and (3) putting the strip steel into the equipment for annealing heat treatment, and placing the strip steel on a guide rail of the rack.

Step two: controlling the intermediate blank plate;

the control panel is operated to adjust rough rolling parameters and roll the intermediate billet plate by observing a guide plate monitor at the inlet side of the hot coil box, the coil shape of the hot coil box, an optimized shearing curve diagram, the deviation change of the rolling force of finish rolling F1-F2 and the wedge change condition of a flatness meter.

Step three: distributing the load;

the operation control board adjusts the loads of the racks 4, 5 and 6 to be a little as possible, and the loads of the front racks 1, 2 and 3 are increased to ensure large pressing amount.

Step four: loop control;

the control panel is operated to properly reduce the tension between the racks before the steel is thrown at the tail part, and the steel strips sequentially lower the loop of the rear rack to a low position when the steel is thrown at F1.

Step five: the side guide plate is provided with an opening;

and operating the control panel to reduce the head-to-tail compensation parameters of the opening degree of the side guide plate in front of the hot coiling box, and simultaneously reducing the tail compensation parameters of the finishing mill side guide plates F1 and F2.

Step six: manual roll bending force adjustment;

the roll bending force of the F3-F5 frames is reduced to about 300 manually in sequence to form a convex roll gap.

Step seven: canceling an AGC tail compensation function;

when the tail of the strip steel is thrown at F1, the control panel is operated to cancel the monitoring of AGC.

2. The strip steel control plate type operation method according to claim 1, characterized in that: the equipment used in the strip steel control plate type process comprises a driving motor, a pneumatic cylinder mechanism and annealing equipment.

3. The strip steel control plate type operation method according to claim 1, characterized in that: the head-to-tail compensation of the opening degree of the front side guide plate of the hot coiling box is adjusted to be 100, 60 and 80, and the tail-to-head compensation of the side guide plates F1 and F2 of the finishing mill is adjusted to be 1 and 1.

4. The strip steel control plate type operation method according to claim 1, characterized in that: and adjusting the roll bending force of the frame to 600-700 KN, and adjusting the roll shifting value to a negative direction.

5. The strip steel control plate type operation method according to claim 1, characterized in that: the idle screw adjustment 4, 5 and 6 on the reversely rotating throttle valve ascends, and the idle screw adjustment 1, 2 and 3 on the positively rotating throttle valve descends.

6. The strip steel control plate type operation method according to claim 1, characterized in that: the F1, the F2 and the F3 are first leads, the F4, the F5 and the F6 are second leads, and the F7 is third leads.

Technical Field

The invention relates to the technical field of strip steel manufacturing, in particular to a strip steel control plate type operation method.

Background

The strip steel is a narrow and long steel plate produced by various steel rolling enterprises in order to meet the requirements of different industrial departments on industrial production of various types of metal or mechanical products. The strip steel is also called steel strip, the width is within 1300mm, and the length is slightly different according to the size of each roll.

In the production process of the strip steel, the strip shape of a rough-rolled incoming material or unstable rolling and other reasons cause non-technological flattening, the phenomenon of wave and deflection exists after the plate surface is flattened, in addition, when the middle blank is seriously wedged and laterally bent (C bend and S bend), the finish rolling is difficult to control, especially the S bend, the inclination change of the head, the middle and the tail of the finish rolling is very large, the tail part of the finish rolling is not timely adjusted when the sleeve falls, and the quality of the strip steel production is poor.

Disclosure of Invention

The invention aims to: in order to solve the problems that the surface of a produced strip steel plate is broken flat and then has wave breaking and bending phenomena, finish rolling is difficult to control, and the inclination of the middle tail part is large in the prior art, the strip steel control plate type operation method is provided.

In order to achieve the purpose, the invention provides the following technical scheme: a strip steel control plate type operation method comprises the following steps:

the method comprises the following steps: annealing the strip steel;

and (3) putting the strip steel into the equipment for annealing heat treatment, and placing the strip steel on a guide rail of the rack.

Step two: controlling the intermediate blank plate;

the control panel is operated to adjust rough rolling parameters and roll the intermediate billet plate by observing a guide plate monitor at the inlet side of the hot coil box, the coil shape of the hot coil box, an optimized shearing curve diagram, the deviation change of the rolling force of finish rolling F1-F2 and the wedge change condition of a flatness meter.

Step three: distributing the load;

the operation control board adjusts the loads of the racks 4, 5 and 6 to be a little as possible, and the loads of the front racks 1, 2 and 3 are increased to ensure large pressing amount.

Step four: loop control;

the control panel is operated to properly reduce the tension between the racks before the steel is thrown at the tail part, and the steel strips sequentially lower the loop of the rear rack to a low position when the steel is thrown at F1.

Step five: the side guide plate is provided with an opening;

and operating the control panel to reduce the head-to-tail compensation parameters of the opening degree of the side guide plate in front of the hot coiling box, and simultaneously reducing the tail compensation parameters of the finishing mill side guide plates F1 and F2.

Step six: manual roll bending force adjustment;

the roll bending force of the F3-F5 frames is reduced to about 300 manually in sequence to form a convex roll gap.

Step seven: canceling an AGC tail compensation function;

when the tail of the strip steel is thrown at F1, the control panel is operated to cancel the monitoring of AGC.

Preferably, the equipment used in the strip steel control plate type process comprises a driving motor, a pneumatic cylinder mechanism and annealing equipment.

Preferably, the head-to-tail compensation of the opening degree of the front side guide plate of the hot coiling box is adjusted to be 100, 60 and 80, and the tail-to-tail compensation of the side guide plates F1 and F2 of the finishing mill is adjusted to be 1 and 1.

Preferably, the bending roll force of the machine frame is adjusted to 600-700 KN, and the roll shifting value is adjusted to be a negative direction.

Preferably, the idle screw adjustment 4, 5, 6 on the counter-rotating throttle is up and the idle screw adjustment 1, 2, 3 on the forward-rotating throttle is down.

Preferably, the F1, F2 and F3 are first leads, the F4, F5 and F6 are second leads, and the F7 is third leads.

Compared with the prior art, the invention has the beneficial effects that:

1. the method judges by observing the guide plate monitor at the inlet side of the hot coil box, the coil shape of the hot coil box, an optimized shearing curve chart, the deviation change of the finish rolling force of F1-F2 and the wedge change condition of a flatness meter, adjusts the rough rolling in time, ensures that the plate shape is good when the thin gauge is rolled, and then improves the quality of the produced strip steel;

2. when F1 steel is thrown, the invention cancels AGC monitoring, thus avoiding the phenomenon that the roll gap is frequently adjusted in a large range to increase the difficulty of pressing adjustment, reducing the difficulty of speed control, realizing low sleeve falling and reducing the phenomena of tail flicking and overlapping rolling caused by AGC feedforward control caused by the change of tail steel temperature and the change of rolling force.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a rolling force deviation diagram of a prior art strip steel control plate profile operation method;

FIG. 2 is a rolling force deviation diagram of a strip control panel type operation method according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the illustrated orientations or positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

A strip steel control plate type operation method comprises the following steps:

the method comprises the following steps: annealing the strip steel;

and (3) putting the strip steel into the equipment for annealing heat treatment, and placing the strip steel on a guide rail of the rack.

Step two: controlling the intermediate blank plate;

the control panel is operated to adjust rough rolling parameters and roll the intermediate billet plate by observing a guide plate monitor at the inlet side of the hot coil box, the coil shape of the hot coil box, an optimized shearing curve diagram, the deviation change of the rolling force of finish rolling F1-F2 and the wedge change condition of a flatness meter.

Step three: distributing the load;

the operation control board adjusts the loads of the racks 4, 5 and 6 to be a little as possible, and the loads of the front racks 1, 2 and 3 are increased to ensure large pressing amount.

Step four: loop control;

the control panel is operated to properly reduce the tension between the racks before the steel is thrown at the tail part, and the steel strips sequentially lower the loop of the rear rack to a low position when the steel is thrown at F1.

Step five: the side guide plate is provided with an opening;

and operating the control panel to reduce the head-to-tail compensation parameters of the opening degree of the side guide plate in front of the hot coiling box, and simultaneously reducing the tail compensation parameters of the finishing mill side guide plates F1 and F2.

Step six: manual roll bending force adjustment;

the roll bending force of the F3-F5 frames is reduced to about 300 manually in sequence to form a convex roll gap.

Step seven: canceling an AGC tail compensation function;

when the tail of the strip steel is thrown at F1, the control panel is operated to cancel the monitoring of AGC.

As a preferred embodiment of the present invention: the equipment used in the strip steel control plate type process comprises a driving motor, a pneumatic cylinder mechanism and annealing equipment.

As a preferred embodiment of the present invention: the head-to-tail compensation of the opening degree of the front side guide plate of the hot coiling box is adjusted to be 100, 60 and 80, and the tail-to-head compensation of the side guide plates F1 and F2 of the finishing mill is adjusted to be 1 and 1.

As a preferred embodiment of the present invention: and adjusting the roll bending force of the frame to 600-700 KN, and adjusting the roll shifting value to a negative direction.

As a preferred embodiment of the present invention: the idle screw adjustment 4, 5 and 6 on the reversely rotating throttle valve ascends, and the idle screw adjustment 1, 2 and 3 on the positively rotating throttle valve descends.

As a preferred embodiment of the present invention: the F1, the F2 and the F3 are first leads, the F4, the F5 and the F6 are second leads, and the F7 is third leads.

Example 1:

as shown in fig. 1-2, the strip control plate type operation method of the present invention has a value compared to the conventional strip control plate type operation method, and it is apparent from the rolling force deviation graph that the adjustment amplitude is reduced after AGC is cancelled.

After the operation method for controlling the plate type of the strip steel is used, the integral plate type of the strip steel is effectively controlled, quality objections and roller consumption are reduced, the quality of a workshop is guaranteed, meanwhile, the production cost is reduced for enterprises, and a solid foundation is laid for improving the image of the enterprises and the market competitiveness.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.